Hi, my mother was diagnosed with breast cancer twenty years ago and had both breasts and lymph nodes under the arm removed. Over the past few months she has been having pain under her right armpit and upper breast area. The pain started out as being mild but over the last month has gotten worse to the point now that is an almost constant throbbing pain. It is painful to the point that she dreads dressing and putting on a bra. She has been without an oncologist the past few years but she is scheduling an appointment with a new oncologist tommorow. If you wouldn't mind giving any advice it would be greatly appreciated. Thanks